Vernier-type oil burner nozzle



Jan- 29, 1952 F. MARTIN VERNIERTYPE OIL BURNER NOZZLE Filedsept. 2o, 1949 :d R/ mw /m .if s M4 h ,M .C f LIWWW `Patented Jan. 29, 1952 UNITED `STATES PATENT: OFFICE i l l 2,583,659

VERNIER-TYPE OIL BURNER NOZZLE Nicholas F. Martin, Wilmington, Del. Application September 20, 1949, Serial'No. 116,717

This invention relates to control valves, :and

more particularly to a device for controlling the ow of liquid fuel in an oil burner.

A main object of the invention is to provide a novel and improved oil burner control device which is very simple in construction, which is easy to manipulate, and which provides accurate control of the size of the spray oriiice of anoil burner.

A further Vobject ofthe invention is `to provide an improved control valve for controlling the size of the `jet of fuel in a marine oil-burning boiler or similar oil-burning device, the control device involving only a few parts, being reliable in operation, and providing a visual indication of the rate of flow of fuel to the burner orifice at all times. l

Further objects and advantages of the inventionwill become apparent from the following description and claims, and from the accompanying drawings, wherein:

Figure 1 is a front end elevational view of a calibrated oil burner fuel jet device constructed in accordance with the present invention;

Figure 2 is a longitudinal cross-sectional View taken on the line 2.-2 of Figure 1;

Figure 3 is atransverse cross-sectional view taken on the line 3-3 of Figure 2;

Figure 4 is a fragmentary elevational view of the rear end portion of the calibrated jet device, showing the calibrated scale and the pointer associated therewith.

Referring to the drawings, II designates the body of the burner, said body being generally cylindrical in shape, and being formed with an oil-supply conduit I2 through `which fuel oil may be admitted into thebody II. Threaded on the forward end of the body II is a sleeve member I3, the body II being formed with an annular shoulderat I4 and a plurality of annular shims I5 beinginterposed between the shoulder I4 and the rim of the sleeve I3 to provide a desired position of the sleeve I3 with respect to the body II..

The sleeve I3 may be provided with indentations I6 and the body I l may be provided with similar indentations I1, whereby the sleeve member may be accurately positioned with respect to body II byaligning the indentations I9 with the indentations I1. Threaded on the forward end of the sleeve member I3 is a nut I8 carrying a conicallyapertured plate I9, the aperture in the plate I9 being centrally located and dening the outer wall of the fuel-discharge opening. Plate I9 is recessed, as shown at 20, and sleeve member I3 is formed with longitudinal passages 2|, whereby 2 Claims. (Cl. 299-136,)

the recess 2U is placed in communication with the inside of the body I I. The bore of sleeve member I3 is designated at 22, said bore being formed with a longitudinal keyway 23. Designated at 24 is a stem formed at its forward end with a needle valve portion 25 received in the conical aperture of plate I9 and formed with annular ribs 26 slidably tting the bore 22. Each rib 26 is formed with a lug 21 slidably fitting the keyway 23 and preventing rotation of the stem 24.

Threaded on the rear e'nd of the body II is a nut 28 formed with an annular recess 29 receiving the flange 30 of a sleeve member 3|. The sleeve member 3I is secured in the position shown in Figure 2 by a nut 32 rotatably surrounding said sleeve member and threaded into the nut 28. The sleeve member 3I is thereby held against longitudinal movements with respect to nut 28, but is freelyrotatable in said nut. The valve stem 24 is formed with a reduced extension 33 which is threadedly engaged with the sleeve member 3|. Designated at ,34 is a cylindrical cup member which nts over the end of the nut 28 and is rigidly clamped to the sleeve member 3I by a bolt 35 threaded into the end of the sleeve 3|, a washer 36 being interposed between the head of the bolt and the inner wall of an annular, axial recess 31 formed in the cup member 34. A locking pin 38 positioned in opposing recesses in the cup member 34 and sleeve 3l is employed to positively couple the cup member to the sleeve member, asshown in Figure 2. Secured on the nut 28 is a stationary, longitudinally-directed pointer 39, and marked on the outer surface of the cylindrical wall of the cup member 34 is a scale 40 calibrated in terms of various sizes of fuel-discharge openings. Designated at 4I is a radially-projecting, outwardlybiased, spring-pressed detent member positioned in a radial recess formed in the nut 28 and being engageable in recesses 42 formed in the inner wall surface of the cup member 34 and spaced inaccordance with the spacing of the calibration numerals of thescale 40. As shown in Figure 2, the detent 4I is longitudinally aligned with the pointer 39, wherebythe various numerals on the scale 48 may be made to positively register with the pointer 39. v

Designated at 43 is a flexible bellows which is threadedly secured at 44 to the valve stem 24 and which is clamped between the end of body I I and the recess, shown at 45, in which body II is threadedly connected to the nut 28. The reduced stem portion 33 is thereby effectively sealed ofi with respect to the main internal portion of the -body II. Annuler shims, such as shown at Y tion of the scale 40 at all times.

It will be seen from Figure 2l that by revolving" 3 i 46, -may be positioned between the ared end of the bellows 43 and the annular shoulder dened at the bottom of the recess 45.

The rear end of the body Il adjacent the nut 28 may be formed with indentations 41 and the nut 28 may be formed with similar indentations 48, whereby by aligning the indentations 41 and 48, the nut 28 may be rotated to a predetermined desired position with respect to the body llv, as previously described-With respectfto the. indentations Iiid and I1, thereby providing a means for maintaining the accuracy and original calibrathe cup member 34, the stem 24 may be advanced orV retracted inthe body4 -l because of" the threaded connection of extension-33 with the sleeve 3|. This enables the needle valve element 28 to be advanced or retracted in the discharge orifice of the plate I9. The pointer 39 indicates. on the scale 40 the size of the discharge orice at any particular position of adjustment ofthe cup member 34. It is, therefore, apparent that the size of the orifice may be readily changed from one value to another merely-by rotating the-cup memberY 34 to bringthe desired value corresponding to the desired size of orice into registry with the pointer 39.V The cup member 34 is releasably locked in adjusted position by the. engagementof the'detentl 4| with the-appropriatev recess 42in2the inner Vwall of the cup member.

In the event that the device is taken apart for cleaningor repair, the original calibration-of the scale 40 may be maintained Ywhen the device is reassembled `byemploying the same number of shims l as originally employed-and by registering the indentations I6 and l1 atV the forward end of the device and the indentations 41 and 48 at the rear end of the device in reasl sembling same.

VWhile a speciiic embodimentof aV calibrated fuelv burner adjustable nozzle device has been disclosed in the foregoing description, it will be understood that various modicationswithinpthe spirit of the invention may occur to thoseskilled in the art. Therefore, it is intended that no limitations be placed upon the invention except as defined by the scope o-f the appended claims'. What is claimed is: 1

l. An adjustable liquidv fuel burner nozzle comprising amholl'ow body having lone end provided with a `fuel discharge orifice, a valve stem positioned longitudinally within said body andslidably and non-rotatablyV supported'` in the latter for Ylongitudinal movementthe end of saidfvalve Y stemcontiguous to said or'ice being provided with va needle valve portion receivable within said discharge orifice upon longitudinal movement of said valve stem toward said one end of said body, a sleeve member positioned contiguous to the other end of said body and mounted on the latter for rotary movement about the longitudinal axis .of said vvalve stem, an extension' carriedV by the other end of said valve stem and threadedly engaging said sleeve member forA effecting the longitudinal movement of'saidvvalve stem is response to the rotary` movement of said sleeve member, a cylindrical cup member disposed axially oi said sleeve member and iixedly secured thereto, the outer periphery of said cup member being provided with a scale including 4 Y Y circumierentially spaced indicia, an index element carried contiguous to said scale and cooperating with said spaced indicia for indicating the position of said needle valve portion with respect to said discharge orice, the inner periphery of said cup member being provided with recesses circumferentially spaced at intervals corresponding to the spacing of said indicia, and a spring biased lug projecting outwardly of said body and selectively engageable with said recesses for detachably securing said cup member to said body in select positionsI of the rotary movement of said cup member.

Anadjustable liquid fuel burner nozzle comprising` a hollow body having one end provided with a fuel discharge orice, a valve stem positioned longitudinally within said body and slidably and non-rotatably supported in the latter for longitudinal movement, the end of said valve Vstem contiguous to said orifice being provided with a needlevalve portion receivable within Vsaid discharge orice upon longitudinal movement of said valve stem toward said one end of said body', a sleeve member positioned contiguous to the other end of said body and mounted on the latter for rotary movement about the longitudinal axis of said valve stern, an extension carriedby the other end of said Valve stem and threadedly engaging said sleeve member for effecting. the longitudinal movement `of said valve stern in response to the rotary movement of `said sleeve member, a cylindrical, cup member disposed axially ofY said sleeve member and ixedly secured thereto,vv the outer peripheryof.r said cup .member beingY providedY with a scale including circumferentially'spaced indicia, anindex element carried contiguous to said scale and cooperating with said'` spaced indiciay for indicating; the position of saidrneedle valve portion with respect to said discharge orice the, inner peripheryl of said cup member being providedv with recesses circumferentially spaced at intervalscorresponding'tothespacing of .said indicia, `a springbiased lug projecting outwardly of said body? and selectively `engageable with, saidrrecesses for detachably securing said cup member to said `.body inJselect positions of the rotary movement of said cup member, anda flexible sealing means circumposed about said extension andi fixedly secured to said other end of said stern and said sleeve member.

NICHOLAS E; 'MAR'JSINV REFERENCES CITED The-following references are of recrdfinthe file offthis patent:

UNITED. VSTATES. PATENTS,

Great Britain June, 16,11919 

